CVE-2023-6155Public exploitNetwork attack vector

Email address disclosure via unauthorized AJAX search

Published Dec 26, 2023 · Updated Sep 12, 2024

Information disclosure in AYS Pro Plugins Quiz Maker before 6.4.9.5 allows remote attackers to obtain user email addresses via AJAX. The ays_quiz_author_user_search action accepts unauthenticated search strings and returns matching user identifiers, enabling character-by-character email reconstruction. Network access to the WordPress AJAX endpoint is sufficient, and the demonstrated consequence is disclosure of user email addresses rather than modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in AYS Pro Plugins Quiz Maker before 6.4.9.5 allows remote attackers to obtain user email addresses via AJAX. The ays_quiz_author_user_search action accepts unauthenticated search strings and returns matching user identifiers, enabling character-by-character email reconstruction. Network access to the WordPress AJAX endpoint is sufficient, and the demonstrated consequence is disclosure of user email addresses rather than modification or service interruption.

The record

CVE
CVE-2023-6155
Published
Dec 26, 2023
Updated
Sep 12, 2024
Vendor
AYS Pro Plugins
Product
Quiz Maker
Classifications
CWE-200, CWE-287, T1589.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AYS Pro Plugins · Quiz Makerversion=0 <6.4.9.5

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Information Exposure
CWE-287Improper Authentication
T1589.002Gather Victim Identity Information: Email Addresses

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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